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T 09240Test with Agilent and SMY on 3c273 Correlation notes512 chan delay fix pols
-cross indicates create cross-products -evlbi indicates data will be streamed using vsib_send and vsib_recv -new for the new version of DiFX This creates edit the input file and check the following: EXECUTE TIME (SEC): START MJD: START SECONDS: First time with data to both telescopes is 05:04:20. Run time2sec.pl to convert that time to seconds: observer@hex0:~/correlations/t09240$ time2sec.pl 05:04:20 05:04:20 → 18260 so in the input file: START SECONDS: 18260 For an initial fringe check, set EXECUTE TIME (SEC): 300 OUTPUT FILENAME: /home/observer/correlations/t09240/t09240_1.rpf Lots of channels for initial search NUM CHANNELS: 512 NOTE: 1024 chans doesn’t seem to work! It turned out that default clocks were way out. Try these for a start: # TELESCOPE TABLE ##! TELESCOPE ENTRIES: 2 TELESCOPE NAME 0: HOB CLOCK DELAY (us) 0: −3 CLOCK RATE(us/s) 0: 0.0 TELESCOPE NAME 1: CED CLOCK DELAY (us) 1: 1.05 CLOCK RATE(us/s) 1: 0.0 Polarisations are swapped at Ceduna, so in the TELESCOPE INDEX: 1 … INPUT BAND 0 POL: L INPUT BAND 0 INDEX: 0 INPUT BAND 1 POL: L INPUT BAND 1 INDEX: 1 INPUT BAND 2 POL: R INPUT BAND 2 INDEX: 0 INPUT BAND 3 POL: R INPUT BAND 3 INDEX: 1 Also in the baseline table: # BASELINE TABLE ###! … POL PRODUCTS 0/1: 4 D/STREAM A BAND 0: 1 D/STREAM B BAND 0: 3 D/STREAM A BAND 1: 3 D/STREAM B BAND 1: 1 D/STREAM A BAND 2: 1 D/STREAM B BAND 2: 1 D/STREAM A BAND 3: 3 D/STREAM B BAND 3: 3 Lastly, the port numbers for data # NETWORK TABLE ####! PORT NUM 0: 52100 TCP WINDOW (KB) 0: 512 PORT NUM 1: 52101 TCP WINDOW (KB) 1: 512 Now make the model vex2model_updated.pl t09240.skd Edit the machines file. We’re not using hex1, so it looks like this: hex0 hex5 hex4 hex2 hex3 hex4 hex5 Hobart data on hex5, Ceduna on hex4 edit the threads file. Note number of spaces between text is important: NUMBER OF CORES: 4 8 8 7 7 edit run.sh -np 7 (where 7 is # processes, = wc -l machines) Then start correlation:
Press When the correlation is finished Setup aips on ares: source /usr/local/pkg/AIPS_31DEC06/LOGIN.CSH $CDTST Run aips aips tv=local |